potrf_batch_scratchpad_size (Strided Version)¶
Computes size of scratchpad memory required for potrf_batch
(Strided Version) function. This routine belongs to the oneapi::mkl::lapack
namespace.
Description¶
Computes the number of elements of type T
the scratchpad memory to be passed to the potrf_batch
(Strided Version) function should be able to hold.
API¶
Syntax¶
namespace oneapi::mkl::lapack {
std::int64_t potrf_batch_scratchpad_size(cl::sycl::queue &queue,
mkl::uplo uplo,
std::int64_t n,
std::int64_t lda,
std::int64_t stride_a,
std::int64_t batch_size)
}
Input Parameters¶
- queue
Device queue where calculations will be performed.
- uplo
Indicates whether the upper or lower triangular part of
A
i is stored and howA
i is factored:If uplo = mkl::uplo::upper, the array
a
stores the upper triangular parts of the matricesA
i.If uplo = mkl::uplo::lower, the array
a
stores the lower triangular parts of the matricesA
i.- n
Specifies the order of the matrices
A
i, (0 ≤ n
).- lda
The leading dimension of
A
i.- stride_a
The stride between the beginnings of matrices
A
i inside the batch.- batch_size
Specifies the number of problems in a batch.
Exceptions¶
|
This exception is thrown when an incorrect argument value is supplied. You can determine the position of the incorrect argument by the info() method of the exception object. |
Return Values¶
The number of elements of type T
the scratchpad memory to be passed to the potrf_batch
(Strided Version) function should be able to hold.